I'm talking specifics here. Not just any 6 pieces of wood screwed together with some speakers in them, but how do different things affect the sound. I have done a little bit of research about this but haven't been able to find a whole lot. I have heard that ported cabs are really the way to go in bassland, but I'm not totally sure how a ported cab works. Are the ports essentially just large(ish) holes in the wood or are they like plastic tubes that go in several inches?(one site made it seem that way) Also, what is the difference between porting like that and porting with a small long slot along the bottom of the front? Primarily, I was wanting to build this cab to be as small as possible and portable, but I don't know if making it shallow vs deep (depth-wise) will affect its tone. Also, what does the resonance of the cab have to do with things? How do I make sure the cab will be able to cover a good frequency range (especially on the low end, since I play a 5 string and the fundamental frequency of a low B is 30hz). Another thing I have been tossing around is speaker configuration. Wanting to make it portable I was thinking 2x10, or maybe 2x12. But I was just tonight trying to imagine a 15 and a 6 cab, that might be able to be small. Haven't sized any of those up exactly yet, just thinking. What are your favorite portable cab configurations? Actual construction, I am not worried about too much. I just want to know everything about design of amp cabs before I build it. Anything else that I didn't necessarily ask about but has to do with cabinet design, throw at me. I love learning, and especially learning about things I love. Kind of a longer post, thanks for reading it all and for your comments.